Cierva C30 Autogiro parked at airfield. Autogiro lands on roof of new Post Office Building in Philadelphia, Pennsylvania, USA.

Cierva C30 Autogiro (G-ACIO) built by British A.V. Roe & Co. is seen parked at Air Park, London, England. Several views of the autogiro. Scene shifts to aerial view of the new Federal Post Office building in Philadelphia, Pennsylvania, U.S.A. A Kellett autogiro lands on the building roof, on May 25, 1935,as part of dedication ceremonies,for the new Post Office building. Officials stand on the rooftop watching the landing. The pilot delivers a mail pouch to James A. Farley, the U.S. Postmaster General, thus initiating airmail service between Camden New Jersey and Philadelphia. Aerial views of the Post Office building and surrounding downtown Philadelphia. The autogiro climbing steeply away.